Metal-containing reactive azo chloropyrimidine dyestuffs



O Patented A suitable procedure is as follows: One mole of (A) 3,208,990 METALCONTATNING RE ACTIVE AZO a monoaz-o dyestuff of the formula.

CHLOR'OPYRTMID'INE DYESTUFFS Jakob Benz, Oberwil, BasehLand, and August Schweizer, NH- Q Muttenz, Basel-Land, Switzerland, assignors to Sandoz 5 NH y Ltd., Basel, Switzerland N=N- n-l No Drawing. Filed July 30, 1962, Ser. No. 218,122 A Claims priority, application Switzerland, May 6, 1959, HO S t 74 7 Claims. (or. 260- 146) 10 t (In) This application is a continuation-impart of application wherein A, n, z and y possess the aforecited meanings; Serial No. 26,397, filed on May 3, 1960, (now abandoned) one mole of (B) (I) a tetraha-lopyrirnidine, (H) a further and relates to copperor nickel-containing reactive dyesubstituted or further unsubstituted trihalopyrimidine, or stuffs which correspond in the metal-free form to the (III) a d-ihalopyrimidine further substituted by .a haloforrnula methyl group and (C) a copperor nickel-yielding agent a hal NH N Cw OMe o NHO o-O i: l-- i n-l N N=N HOaS- -11 SOaH t (I) wherein: are reacted together so that the exchangeable hydrogen atom y of the monoaz-o dyestuif (III) is replaced by the radical Z and the copperor nickel-yielding agent reacts with the ortho-ortho-d-ihydroxyazogrouping.

A modification of this procedure consists of coupling in ortho-positi-on to the hydroxy group 1 mole of the diazo compound of the amine of the formula One t is hydrogen and the other 1 is SO H,

v is a member selected from the group consisting of hydrogen, chlorine, bromine, lower alkyl, lower alkoxy, nitro, carboxy and sulfo,

w is a member selected from the group consisting of hydrogen, chlorine, bromine, lower alkyl, lower carbalkoxy, carboXy and carboxymethyl,

hal is a member selected from the group consisting of chlorine and bromine, NH,

Me is a member selected from the group consisting consisting of copper and nickel, and

n: is a positive whole number of at most 2.

wherein A possesses the aforecited meaning, with 1 mole The new metal-conta1n1ng reactive dyestuffs may be of coupling component of the formula prepared by reacting together:

(A) 1 mole of the diazo compound of a 2-amino-1-hydroXybenzene-monoor di-sulfonic acid which may, but OH NH need not, contain further substitutents; NHTZ (B) 1 mole of a coupling component of the formula I -y /n1 t wherein n, t and Z possess the atorecited meanings, and

Hoes treating the resulting monoazo dyestufi with a copperor nickel-yielding agent.

t The metal-containing reactive dyestuffs obtained by wh rein: both the above procedures are the copperand nickel- 1 complex compounds of Formula I. The radical A cont and possess the aforeclted meanmgs and y stands for tains one or two sulfionic acid groups. Other substituents exchangeable hydrogen atom and which may, but need not, be carried by the nucleus A (C) 1 mole of (a) a tetrahalopyrimid-ine, e.g., 2,4,5,6- are halo, e.g., chloro, bromo; lower alkyl, e.g., methyl, tetrabromopyri-midine, (b) a trihalopyrimidine,e.g., 2,4,6- ethyl; alkoxy (preferably lower alkoxy), e.g. methoXy, dibromopyrimidine, (c) a substituted triha'lopyrimidine ethoxy; carboXy and nitro. Especially suitable diazo e.g., 2,5,6-tribromo4-methylpyrimidine, or (d) a dihalocomponents of the Formula IV are e.g. 1-amino-2-hypyrimidine, substituted by a halomethyl group, e.g., 2,4- droxy 5 chlorobenzene 3 sulfonic acid, 1-amino-2- dibromo-5-bromomethyl-6-methylpyrimidine; the reaction hydroxy 3 'carboxybenzene 5 sulfonic acid, 1-aminobeing conducted so that the diazo compound is introduced 2 hydroxybenzene 3,5 disulfonic acid, 1 amino 2- into the position ortho to the OH of the coupling comhydroxybenzene 5 sulfonic acid.

ponent, and the hydrogen atom y of the coupling com- Coupling components which are suitable as starting maponent is replaced by the radical Z, as defined above. terials are l-amino-8-hydroxynaphthalene-3,6-disulfonic The dyestuffs are treated either during or after their foracid, 1arnino-S-hydroxynaphthalene-4,6-d-isulfonic acid mation with acopperor nickel-yielding agent, e.g., cupric and derivatives of these acids in which the amino group chloride, cupric acetate, nickel sulfate, nickel formate. is acylated by an aminobenzoyl radical.

The coupling reaction leading to dyestuffs of Formula III is carried out in aqueous medium advantageously at low temperature, e.g., at from to 20 C., in the presence of an acid-binding agent, such as sodium carbonate or sodium bicarbonate, at an alkaline pH and, if desired, with the addition oftertiary amines, which accelerate the coupling reaction, e.g. pyridine or a mixture of pyridine bases.

The reactive substituent Z is preferably the radical of a polyhalopyrimidine containing at least two mobile halogen atoms, e.g.: the radical of 2,4,6-trichloropyrimidine or 2,4,G-tribromopyrimidine 2,4,6-trichloro--methylor -5-ethyl-pyrirnidine 2,4,6-tribromo-S-methylpyrimidine 2,4,6-trichloro-5-carbomethoxyor -5-carboethoxypyrimidine 2,4,6-trichloroor 2,4,6-tribromo-5-carboxypyrimidine 2,4,6-trichloroor 2,4,6-tribromopyrimidyl5-acetic acid 2,4,6-trichloro-S-chloromethylpyrimidine 2,4,6-tribromo-S-bromomethylpyrimidine 2,4,5,6-tetrachloropyrimidine, 2,4,5,6-tetrabromopyrimidine 2,4,5-trichloropyrimidine or 2,4,5-tribromopyrimidine 2,5,6-trich1oro-4-methylpyrimidine 2,5,6-tribromo-4-methylpyrimid-ine 2,4-dichloro-S-chloromethylpyrimidine 2,4-dibromo-S-bromomethylpyrimidine 2,4-dichloro-5-chloromethyl-6-methylpyrimidine 2,4-dibromo-5-bromomethyl-6-methylpyrimidine.

Each and every one of the particularized reactive substituents Z, Y and X are contemplated within the full scope of variations encompassed by Formulae I and VI, respectively. For the nucleus A of Formula I, the corresponding moiety of Formula V1 is contemplated.

The reaction of the coupling components or of the monoazo dyestufis of Formula III, which latter are employed preferably in the form of their copper or nickel complex compounds, with the trior tetrahalopyrimidines is also carried out in aqueous medium. The halide can be applied as such in concentrated form or in solution in an organic solvent, particularly suitable solvents being acetone, benzene, chlorobenzene and toluene. The reaction temperature is adjusted to suit the reactivity of the individual starting products and varies from 20 to 100 C. If temperatures higher than about 40 C. are necessary, it is advisable to work in vessels equipped with reflux condensers in view of the volatility in steam of some halopyrimidines.

The reaction is conducted in weakly alkaline, neutral to weakly acid medium, preferably within the pH-range of 9 to 3. To neutralize the hydrogen halide formed, an acid-binding agent, e.g. sodium acetate or sodium metaphosphate, is added to the solution at the beginning of the reaction, or, alternatively, sodium or potassum carbonate or bicarbonate in solid powdered form or in aqueous solution is added in small portions during the course of the reaction. Other suitable neutralizing agents are aqueous solutions of sodium or potassium hydroxide. The addition of small amounts of a wetting or emulsifying agent to the reaction mixture can increase the rate of reaction. The reaction is conducted with molecular proportions of reactants or with a slight excess of the reactive component in such a way that only one halogen atom reacts with an exchangeable hydrogen atom.

The coupling of the diazo compound of an amine of the Formula IV with a coupling component of Formula V is carried out in neutral or alkaline medium, preferably at temperaures of 0 to 20 C. and, if desired, in the presence of pyridine.

The monoazo dyestuffs are converted into their copper or nickel complex compounds preferably in weakly acid aqueous solution. ,The reactants are proportionedv 4 so that an amount of metal-yielding agent containing one atom of metal reacts with one molecule of monoazo dyestuif.

Among suitable inorganic and organic copper-yielding agents are cupric salts of strong mineral acids, e.g. cupric sulfate and cupric chloride, and cupric salts of lower alkanoic acids, e.g. cupric formate and cupric acetate.

Suitable inorganic and organic nickel-yielding agents include nickel salts of strong mineral acids, e.g. nickel sulfate, and nickel salt-s of lower alkanoic acids, e.g. nickel formate and nickel acetate.

The metal complex compounds obtained are precipitated from their aqueous solutions with salt and then filtered off, washed, if necessary, and dried.

The metal-containing azo dyestuffs obtained are homogeneous metal complex compounds in which essentially one atom of metal is linked toone molecule of monoazo compound.

The new copperor nickel-containing reactive dyestuffs are only slightly sensitive to salt and hard water. They show very good solubility in water and very little substant-ivity so that on fixation the unfixed portion of dyestuff can be easily removed by washing. They are insensitive to heavy metal ions, such as copper, iron and chromium ions; they possess good stability in printing pastes and padding solutions and good reactivity with vegetable fibers, animal and synthetic polya-mide fibers. They are, therefore, particularly well suited for the dyeing, padding .or printing of wool, silk, leather, synthetic polyamide fibers and fibers of natural or regenerated cellulose, on which they give red-violet to blue-violet shades. If necessary, the pad-dyeings or prints on cellulosic fibers are subjected to an alkaline aftertre-atment for a short time, preferably between 1 and 15 minutes, at high temperature followed by soaping. The dyestuffs are also suitable for the Pad-Batch process, in which the cellulosic fibers are impregnated with an alkaline dyestufif solution, wrapped in a sheet of plastic and stored at room temperature for a long time, prefer-ably between 10 and 50 hours, then rinsed, soaped, rinsed again and dried. The dyeings and prints possess high fastness to light, heat, water, sea water, washing, milling, potting, perspiration, rubbing, alkali, soda boiling, chlorine water, bleaching (peroxides), wet ironing, vulcanizing, gas fumes, weak oxidation and reduction agents, acid and alkaline hydrolytic influences, creaseaesist-ant finishing and dry cleaning.

The new metal-containing reactive dyestuffs reserve polyethyleneterephthaiate fibers, acetate and triacetate rfibers, polyacrylorritrile fibers, polyalkylenefiber-s, polyvinyl chloride and polyvinyl acetate fibers.

The most interesting dyes are those of the formula fizN K 11-) Y HOaS- i;

S0311 t (VI) wherein:

Exemplary dyes of Formula VI are represented, e.g., by Formulae VII to XXI; Formulae VII to XIV representmg such dyes wherein n is 1, and Formulae XV to XXI representing such dyes wherein n is 2.

(XVIII) N o--eu o HNC f i l N=N o1 S0311 (XIX) i 0 EN COONH (ll-Br B 3 r 0 :u N.

l HOaS-- N--N (i) HOaS SOaH S0311 (XX) N-oo 0 on 0 H k aS SOzH 503E (XXI) In the following examples the parts and percentages are by weight, and the temperatures are in degrees centigrade.

' Example 1 and the reaction mixture heated at 60 for 5 to 6 hours with vigorous stirring and gradual dropwise addition of a 15% aqueous sodium carbonate solution to maintain the pH-value at from 4.0 to 4.5. On completion of the reaction the mixture is cooled to 5 and diluted with 200 parts of water. 30 parts of sodium carbonate are added, and the conventionally prepared solution of the diazo compound of 22 parts of l-amino-2-hydroxy-3- chlorobenzene-S-sulfonic acid is run in at from 5 to with thorough stirring. On completion of coupling the blue-violet dyestuflf solution is neutralized by the addition of hydrochloric acid to give a weakly acid reaction to litmus. The solution is then heated to 60 and the dyestuit salted out by the addition of sodium chloride. The dyestufi is filtered off and washed with sodium chloride solution.

The moist filter cake is stirred into 1000 parts of water at 70. parts of crystallized sodium acetate are added, then sufiicient 16% copper sulfate solution is run in until copper ions are indicated in the filtrate of a saltedout sample. precipitated from its solution by the addition of sodium chloride, filtered with suction, washed with sodium chloride solution and dried with vacuum at 80". O-n grinding,

a dark powder is obtained which dissolves in water with The resulting copper complex dyestufi. is,

a violet coloration. The dyestufi is only slightly sensitive to salt and has good stability in printing pastes. Owing to its good solubility, the unfixed portion of the dyestuff can be easily washed ofi the fiber after fixation.

3 parts of the dyestulf obtained according to the above procedure are dissolved in parts of warm water with the addition of 30 parts of a 10% sodium carbonate solution and 0.5 part of sodium 1-nitrobenzene-3-sulfonate. A fabric of viscose staple fiber is impregnated with this solution at an expression (pick-up) giving an increase of 75% on the dry weight. The fabric is dried, steamed with wet steam for from 5 to 10 minutes at 102, rinsed in warm and cold water, soaped at the boil if necessary, and again rinsed with hot and with cold water and dried. A violet dyeing of very good light and wash fastness is obtained.

Example 2 18.9 parts of 1-amino-2-hydroxybenzene-S-sulfonic acid are stirred into 100 parts of cold water, acidified with 10 parts of 30% hydrochloric acid and di'azotized at 10 by the gradual even addition of a solution of 7 parts of sodium nitrite in 25 parts of water. 32 parts of l-amino- 8-hydroxy-naphthalene-3,6-disulfonic acid are dissolved neutral with about 13 parts of 30% sodium hydroxide solution in 200 parts of water. 25 parts of sodium bicarbonate are added; and, after cooling to 5, the solution of the diazo compound is run in at an even rate. On completion of coupling the blue-violet monoazo dyestuff formed is partially precipitated. It is completely precipitated by the addition of sodium chloride solution, then filtered off and washed with sodium chloride solution.

In a mixing vessel fitted with a reflux condenser the moist filter cake is stirred into 700 partsof water at 60.

30 parts of crystallized sodium acetate are added, and, simultaneously, about 95 parts of a 16% copper sulfate solution are run in until copper ions are indicated in the filtrate of a salted-out sample. On completion of metallization of the dyestuif the solution is carefully adjusted to pH 6 with sodium hydroxide solution. 22 parts of 2,4,5,6-tetrachloropyrirnidine are added, and the mixture is stirred for from 3 to 5 hours at from 60 to 70. By even addition of a dilute sodium hydroxide solution, the pH-value of the reaction mixture is maintained between 5 and 6. When the reaction is completed, which can be easily followed by chromatography, the copper-containing pyrimidine dyestuff is salted out of its solution, filtered off and washed with sodium chloride solution.

The moist dyestulr is dried at 80 under reduced pressure. In the ground form it is a dark powder which dissolves in water to give violet solutions. It possesses only slight salt sensitivity and shows good stability in printing pastes. Owing to its good solubility in water the unreacted portion of the dyestuff can be easily washed off the goods :after fixation.

A mercerized cotton fabric is printed with a paste of the following composition:

15 parts of the dyestutf obtained according to the procedure of Example 2, 100 parts of urea, 400 parts of water, 450 parts of 4% sodium alginate thickening,

parts of sodium 1-nitrobenzene-3-sulfonate and 25 parts of sodium carbonate 1000 parts.

The fabric is then squeezed out so that the pick-up ofv liquor is :about 75% of the weight of the dry material, wrapped in a sheet of plastic and stored for 24 hours at 25. Then it is rinsed with cold and with warm water, soaped for 20 minutes at the boil with a solution containing 0.35 gram of a partially carboxymethylated alkylpolyglycol ether :and 0.5 gram of sodium carbonate per liter, rinsed again and dried. A violet dyeing of very good fastness to light, Washing, water, sea-water, perspiration, rubbing and drying cleaning is obtained.

Example 3 18.9 parts of 1-amino-2-hydroxybenzene-S-sulfonic acid are diazotized by the procedure described in Example 2. 44 parts of 1-(3-amino)-benzoylamino-8-hydroxynaphthalene-3,6-disulfonic acid are dissolved neutral with about 13 parts of 30% sodium hydroxide solution in 500 parts of water. 24 parts of sodium bicarbonate and parts of pyridine are added, the solution cooled to 10 and the solution of the diazo compound is run in at an even rate. On completion of coupling the blue-violet monoazo dyestuff formed is precipitated with 30% hydrochloric acid, filtered off and purified by dissolving and reprecipitation.

32 parts of the monoazo dyestuff obtained are dissolved neutral in 650 parts of water at and stirred in a vessel with 11 parts of 2,4,5,6-tetrachloropyrimidine for from 3 to 5 hours at from 60 to By even addition of a 15% aqueous sodium carbonate solution, the pH-value of the mixture is maintained between 3.5 and 5.5.

On completion of the reaction 15 parts of crystallized sodium acetate are added; and, subsequently, a sufiicient amount of 10% copper sulfate solution is run in until copper ions are indicated in the filtrate of a salted-out sample. The copper complex dyestuff obtained is precipitated from its solution by the additionof sodium chloride, filtered with suction and dried with vacuum at On grinding it is a dark powder which dissolves in water with a violet coloration.

When the dyestuff is printed using the recipe given in Example 2, a reddish violet print is obtained Which is fast to light and washing and withstands crease-resistant finishing.

The following table gives details of further metal-containing reactive dyestuffs which, like dyestuffs represented by Formulae VIII to XXXI, are obtainable according to the procedure described in Examples 1 to 3. In the table the further metal-containing reactive dyestuffs are characterized in columns I to V, respectively, by the diazo and coupling component, the reactive compound, the metal used for metal-complex formation and the shade of the dyeing on cotton.

Example Diazo Component Coupling Component Reactive Compound Metal Shade of the N 0. Dyeing on Cotton l-amino-Z-hydroxy-S-chloroben- 1-amino-8-hydroxy-naphthalene- 2,4,6-trichloro-pyrimidine Cu Violet.

zene-3-sulfonic acid. 3,6-disullonic acid. 1-amin0-2-hydroxy-3-carboxy-ben- .do .do Cu Do.

zene5-sulionic acid. 1-amino-2-hydroxy-benzene-3,5- 1-(3-amino)-benzoylamino-S- 2,4,5,6-tetrachloro-pyrimidine Cu Reddish violet.

disulfonic acid. hydroxy-naphthalene-3,6-disulionic acid. do do 2,4-dichioro-5-chl0ro-methyl-6- Cu Do.

methylpyrimidine. .do do 2,4,G-trichloro-pyrimidine Cu Do. l-amino2hydroxy-benzene-5- 1-amind8hydroxy-naphthalened0 Ni Do.

sulionic acid. 3,6-disulfonic acid. ..do .dn 2,4,5-trichloro-pyrimidine Cu Violet. do 1-amino-8-hydroxy-naphthalene- 2,4,5,6-tetrachloro-pyrimidine Cu Do.

4,6-disulfonic acid. do do do Ni Reddish violet.

l-arnino-2-hydroxy-3-carboxy-bend0 2,4,6-trichlor0-pyrimidine Cu Violet.

zene-fi-sulfonic acid. 1-amino-2-hydroxy-benzene-3,5- do do Cu Do.

disulfonic acid. 1-amino-2-hydroxy-3 nitrobenl-amino-S-hydroxy-naphthalene- 2,4,5,fi-tetrachloto-pyrimldine Cu Bluish violet.

zene-5-sulfonic acid. 3,6-disulfonic acid. l-arnino-2 hydroxy-dnitroben- -do do Cu D0.

zene-3-su1fonie acid. 1-aI!llI10-2-hydIOXy-5-methOXy- ..do 2,4,6-tribromopyrimidine Cu Violet.

benzene-3-sulfonic acid. 1-amino-2-hydroxybenzene-fi-sul- .do 2,4,6-trichloro-5-methyl-pyrim- Cu Do.

fonic acid. idine. Lamina-Z-hydroxybenzene-5-suldo 2,4-dichloro-fi-chloromethyl- Cu Do.

ionic acid. pyrimidine. .do 1-amino-8-hydroxynaphthalene- .do Cu Do.

4,6-disulfonic acid.

13 14 Example 11 2. The copper-containing reactive dyestuif of the forrnula OOu O NHO/ CCl N/ \CH 5 l l 1% I o-ou o N1-I g A 01 5 l I:

o o1- N=N N HOaS all I I HO3S- SOaH SOaI-I 80311 50311 Example 12 3. The copper-containing reactive dyestulf of the for 15 mula 01 i I I fi/ (3-3311 0 NH([? J-o1 N N N N 4 N=N \O N N \C/ HO S (III HO3S SOaH $1 I l SOaH SO E SO H 3 a 4. The nickel-containing reactive dyestuif of the for- 1 Example mu a C1 C1 30 A o N' 0 NH H OH c1 1 o- 1 n- 0 NHC oc1 5 ls l l N N=N I'IOiiS S0311 HO3S S0311 1 I I SOsH SOSH 5. The copper-containing reactive dyestuff of the for- 40 mula It is thought that the invention and its advantages will 01 be understood from the foregoing description, and it is apparent that various changes may be made in the structure of the dyestuffs without departing from the spirit and O C O NH N CH C scope of said invention or sacrificing its material advan- E 1 tages. The particular dyestuffs hereinbefore described i are merely illustrative of preferred embodiments of the invention.

HO 8-- What is clalmed 1s: 3 1. Dyestuff of the formula Sloan @0311 lial NH N o w G I u hal OMe 0 NH-0C C o- I I n-l J N N=N HOsS- l;

SOaH t wherein: 6. The nickel-containing reactive dyestuff of the forone t is hydrogen and the other I is -SO H, mula v is a member selected from the group consisting of hydrogen, chlorine, bromine, lower alkyl, lower alkoXy, O1 nitro, carboxy and sulfo,

w is a member selected from the group consisting of hydrogen, chlorine, bromine, lower alkyl, lower carbal- O CH 01 koxy, carboxy and carboxymethyl, 5 i3 ihal is a member selected from the group consisting of chlorine and bromine,

Me is a member selected from the group consisting of HO3S copper and nickel, and

n is a positive whole number of at most 2. Sloan s'oan 7 The nickel-containing reactive dyestufl of the formula i I 1 N k 2' Bo s SOaH $1 16 References Cited by the Examiner UNITED STATES PATENTS 3,007,762 11/61 Wegmann et a1. 260-151 X FOREIGN PATENTS 1,220,770 1/ 60 France. 1,221,621 1/ 60 France. 1,225,281 2/60 France. 

1. DYESTUFF OF THE FORMULA 